Instead of returning a boolean value on {WasmCodeManager::Commit}, and
always failing on {false}, just remove the return value and fail within
{WasmCodeManager::Commit} directly. This allows us to generate better
error messages if running OOM.

R=thibaudm@chromium.org

Bug: chromium:1107649, chromium:1117033
Change-Id: Ic8089e4385ddf92c164b9a0c770c210e1caddcbe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2362962Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69464}